如何向下滑动 div 然后 .fadeIn() 内容，反之亦然？

Goal

当用户单击该按钮时，相关 div 将：

1. 滑下
2. stop
3. 淡入内容

当用户再次单击该按钮时，div 将：

1. fade out
2. stop
3. slide up

当前位置

这是一个示例，其中fadeIn and fadeOut发生在正确的时间，但没有slide分别在fadeIn和fadeOut之前和之后的效果
http://jsfiddle.net/tkRGU/1/

还有这个选项有滑动切换功能但不具备fadeIn and fadeOut分别发生在幻灯片之后和之前。
http://jsfiddle.net/MY8DD/7/

这会起作用：

HTML:

<a href="#" onclick="toggleSlider();">toggle</a>
<div id="panelThatSlides" style="display:none;background:#eee;padding:10px;">
    <div id="contentThatFades" style="opacity:0;filter:alpha(opacity=0);">
        Lorem ipsum dolor sit amet, consectetur adipiscing elit. Donec ut tortor  erat, et consectetur nisl. Nunc non placerat odio. Cras feugiat  pulvinar diam sed sollicitudin. Quisque ut elit lacus, et gravida nunc.  Maecenas ac enim ligula. Aenean felis nunc, vulputate pellentesque  vehicula nec, tristique a tortor. Curabitur et semper dui. Sed id nisl  turpis. Sed vel nunc et nisi laoreet feugiat. Sed lobortis enim sed arcu  tempor vehicula. Vivamus dui ligula, ultricies id egestas ut, rhoncus  et est. Pellentesque dignissim diam vel nibh tempus condimentum. Etiam  sodales fermentum pharetra. Etiam faucibus tempus malesuada. Mauris  nulla lectus, laoreet sit amet cursus vel, ultricies at enim. Sed  facilisis rutrum eros, nec malesuada eros iaculis ac.
        <br /><br />
        In consectetur faucibus fermentum. Pellentesque habitant morbi tristique  senectus et netus et malesuada fames ac turpis egestas. Cras nunc  magna, vestibulum eget pulvinar hendrerit, tincidunt id arcu. Nullam  dolor ligula, suscipit placerat condimentum ac, feugiat ut mauris.  Suspendisse semper dolor condimentum dui ornare rhoncus. In bibendum  massa vel erat tristique congue. Donec vel mi quam, ac iaculis odio.  Nulla interdum orci quis ligula aliquam viverra. Nam eget egestas  mauris. Sed in massa quis erat venenatis aliquam.
    </div>
</div>

JavaScript：

function toggleSlider() {
    if ($("#panelThatSlides").is(":visible")) {
        $("#contentThatFades").animate(
            {
                opacity: "0"
            },
            600,
            function(){
                $("#panelThatSlides").slideUp();
            }
        );
    }
    else {
        $("#panelThatSlides").slideDown(600, function(){
            $("#contentThatFades").animate(
                {
                    opacity: "1"
                },
                600
            );
        });
    }   
}

JS Fiddle 上的工作示例.

对于 IE，只需确保 ClearType 内容后面有背景色即可。